Sealed Power E-481X Engine Piston Ring Set

Sealed Power E-481X Piston Ring Set

Sealed Power E-481X is a standard-size engine piston ring set built for 93.00 mm bores with OE-style ring groove widths of 1.60 mm, 1.75 mm, and 3.50 mm. It is engineered for 6-cylinder applications and uses reverse torsional top and second ring faces with grey iron ring materials for consistent sealing performance.

Compatible With 1986-1992 Ford Ranger and 1986-1990 Ford Bronco II applications that call for the E-481X ring package. This part cross-references AMS Automotive 4450 for the same application.

Key Features

• Part number: E-481X
• Standard size piston ring set for 93.00 mm bore diameter
• Top ring width: 1.60 mm
• Second ring width: 1.75 mm
• Oil ring width: 3.50 mm
• Reverse torsional face design on the top and second rings
• Grey iron top and second ring materials
• 3-piece flex vent oil ring design
• Fits 6-cylinder engine applications

Detailed Description

Sealed Power E-481X is designed for engines that require a standard-size piston ring set with 1.60 x 1.75 x 3.50 mm groove widths and a 93.00 mm bore. The reverse torsional face design on the top and second rings helps maintain ring contact characteristics during operation, while the grey iron construction supports stable sealing in everyday engine service. For buyers searching for Ford Ranger piston rings or Ford Bronco II engine ring sets, this part number provides a direct match for the listed applications.

Sealed Power focuses on modern manufacturing methods and controlled production standards to deliver engine components built for demanding use. The E-481X is a practical choice for rebuilds where correct bore size, ring width, and standard-fit dimensions are required.

Common Repair Uses

• Restoring cylinder compression
• Reducing oil consumption from worn rings
• Addressing blow-by caused by ring wear
• Correcting poor sealing after an engine rebuild
• Replacing worn piston rings in 1986-1992 Ford Ranger and 1986-1990 Ford Bronco II engines

Installation Notes and Tips

Verify bore diameter, ring groove widths, and piston specifications before installation. The E-481X is a standard-size set and is not file fit, so confirm that the engine does not require custom ring end-gap adjustment beyond normal service procedures. Clean ring grooves thoroughly, check cylinder wall condition, and follow the engine builder’s end-gap and orientation specifications during assembly.

Quality Assurance

Sealed Power manufactures engine components using advanced materials and ISO- and QS-certified production processes. That manufacturing approach supports consistent fit and repeatable performance for rebuild work on Ford Ranger and Ford Bronco II engines that use the E-481X specification.